mudbogger
Member
I’m starting a build for a Yak-54 20cc profile plane and I’m considering using a YS 120 nitro engine on it. The engine should fit, it’ll just burn through nitro rather fast. However, it is still a 20cc gas equivalent. One issue I’ve run into is trying to find a propeller for it. From the little research I’ve done it looks like the engine was built for a 15 x 7 prop. But finding a good one designed for gas engines has been kinda tough. I could go up to a 17 x 6 or 17 x 7, just not sure if it would work for it? The airplane is balsa / ply construction with carbon fiber reinforcement; and the wingspan is about 65” (maybe 65.5” with the side force generators on). I’m guessing it’ll run with somewhere between 2-3 horsepower. Just curious on everyone’s thoughts for a 3D setup? I’d also prefer to stay away from 3 bladed props as the traditional 2 bladed props seem to run better (at least in my experience). I already have the servos for it, just need a receiver and propeller - then it should be time to start assembly. Thanks for your help! Happy Flying!